Reversing-cam for endless conveyers.



' "Nb; 7|4,|49. Patented Nov. 25,1902.

P. B. CLARKE. REVERSING CAM FOR ENDLESS CONVEYERS.

(Application filed Jan. 4, 1901.)

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.Nu. 7|4,.|4 9. Patented Nov. 25, 1902 P. B. CLARKE.

REVERSING CAM FOR ENDLESS EONVEYERS.

[Appfication filed Jan. 4, 1901.)

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(No Model.)

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Patented Nov. 25, I902.

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(Application filed Jan. 4. 1901.

No. 7|4,l49.

(No Model.)

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Patented N ov.- 25, 1902. P. B. CLARKE. REVEBSING CAM FOR ENDLESSCONVEYERS.

(Applicatiqn filed Jan. 4, 1901.)

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P. B. CLARKE v UNITED STATES PATENT OFFICE.

PEETE B. CLARKE, OF NEW YORK, N. Y.

REVERSlNG-CAM FORENDLESS CONVEYERSQ SPECIFICATION forming part ofLetters Patent No. 714,149, dated November 25, 1902.

Application filed January 4, 1901. Serial No. 42,119. (No modeli) To allwhom it may concern:

Beit known that I, PEETE B. CLARKE, a citizen of the UnitedStates,residing at New York, in the county of New York and State of NewYork, have invented a new and useful Reversing-Oam for Endless Oonveyers, of which the followingis a specification.

The invention relates to a reversing-cam for endless conveyors havingpivoted buckets.

The object of the present invention is to provide a simple andcomparatively inexpensive device designed for use in connection withendless conveyers and adapted after the pivoted buckets thereof havetraveled from the point of supply to the point of discharge and havebeen emptied to reverse the buckets and change them from one side of theconveyer to the other to arrange them in proper position for receivinganother charge of material.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a vertical sectional view of an endlessconveyer provided with reversing-cams constructed in accordance withthis invention. Fig. 2 is an enlarged longitudinal section of a portionof the endless conveyer, illustrating the construction of thereversing-cams and the guide rail or bar for completing the reversal ofthe buckets. Fig. 3 is a transverse sectional view of the endlessconveyer. Fig. 4 is a detail view of a portion of the guide rail or barand one of the reversing-cams. Fig. 5 is a detail .view illustrating themanner of mounting the ing adapted to convey the same upward to asuitable point, where the material is discharged. The buckets afterbeing discharged of their contents are returned to the bottom flight andare reversed by the means hereinafter described in order that they willbe in proper position to receive the material when they arrive at thesaid bottom flight. The buckets receive the material in an uprightposition and are maintained in an upright position by the weight of thesame until they are dumped to discharge their contents, and the weightof the buckets will cause them to lie at the inner or lower side of theupper horizontal flight, (illustrated in Fig. 1 of the accompanyingdrawings,) from which position they must be changed in order to arrangethem properly for the reception of the material.

The buckets are provided at opposite sides with cams 163, secured to theexterior of the buckets by any suitable means and provided with pivotsor trunnions which are arranged in suitable bearing-openings of innerlinks 118 of the endless conveyer-chain. The endless conveyer isprovided with inner and outer links 118 and 119, which are connected attheir ends by transverse shafts or axles 117, having wheels 120 mountedupon their ends and arranged to run upon suitable rails arranged aboveand below or at the inner and outer sides of the wheels, according tothe disposition of the conveyer. Thecams are provided with tapered upperportions and have sloping or oppositely-inclined lower edges forming arounded bottom, and they are adapted to engage a dumping-block 160, asindicated in Figure 1 of the accompanying drawings; but as thedumping-block does not constitute a portion of the present invention adetailed description and illustration are deemed unnecessary.

The pivoted buckets are inverted and swung upward from a point beneaththe links of the conveyer, as clearly illustrated in Figs. 1 and 2 ofthe accompanying drawings, by reversing-cams 194 to position the bucketsproperly, as before explained. The reversing-cams 194, which are locatedat opposite sides of the conveyer, are approximately L-shaped,beingcomposed of a vertical front portion, a horizontal rear portion, and acurved intermediate portion. They are supported by approximatelyL-shaped brackets 194 and 194", as clearlyillustrated in Fig. 6 of theaccompanying drawings. The brackets, which are approximately L-shaped,have horizontal and vertical arms, the bracket 194 being located at thefront of the reversing-cam and having its vertical arm depending fromthe horizontal arm. The other bracket 19 has its vertical arm extendingupward from its horizontal'arm, and it is riveted or otherwise securedto the rear end of the adjacent reversingcam. The reversing-cams arepreferably constructed of flanged metal, and they are arranged Withinthe paths of the cams of the buckets and are adapted to be engaged bythe same, whereby as the buckets travel forward they Will besuccessively swung upwardly and rearwardly to an inclined position bythe reversing-cams.

The movement of the buckets is completed by means of a centrallongitudinal guide bar or rail 195, located midway between the pairs ofrails and provided with an inclined front portion 196, arranged toengage the lower portion of each bucket after the same has been broughtto an inclined position by the reversing-cams. As each bucket is drawnover the inclined portion 196 of the guide bar or rail it is graduallybrought to an inverted position above the links of the endless conveyer.The guide bar or rail 195 may be of any desired length, and it isadapted to mainrain the buckets at the outer or upper side of theendless conveyer until the buckets arrive at a descending flight and arein a position in which the center of gravity will prevent them fromswinging backward. In Fig. 1 of the accompanying drawings the endlesscarrier is shown with the descending flight at the back, and the guidebar or rail 195 is curved and is of a sufficient length to maintain thebuckets in an inverted position until the center of gravity of thebuckets lies beyond the pivots of the same.

The buckets are provided at their ends with curved lips which arelocated, respectively, at the opposite sides of the adjacent shafts ofthe endless conveyer, and the longitudinal guide bar or rail engages thecontiguous lip of each bucket and holds the same against the adjacenttransverse shaft of the conveyer. The guide bar or rail is supported atintervals by suitable brackets 195 and 195 mounted on a transverseangle-iron beam 195. The angle-iron beam 195 is secured at its ends tothe adjacent side rails, and the bracket 195, which is centrallyarranged, is approximately L-shaped, its horizontal portion being at thetop and being secured to the flanges of the guide bar or rail 195. Theother portion of the bracket 195 extends downward and is secured to thetransverse beam 195. The other bracket 195 is secured to the top of thetrans verse angle-iron beam and to the upper portion of the bracket 195,and it serves to brace the latter and assists in supporting thelongitudinal guide bar or rail 195.

It will be seen that the device for reversing the buckets is exceedinglysimple and inexpensive in construction, thatit possesses great strengthand durability, and that the reversing-cams, which are located atopposite sides of the conveyor, are spaced apart to permit the buckets,or rather the body of the buckets, to pass between them, and that theyare adapted to engage the cams at the exterior of the buckets to swingthe latter upwardly and rearwardly to an inclined position. Furthermore,it will be apparent that after the curved intermediate portion of thecams have brought the buckets to an inclined or partially-invertedposition the rearwardly-extending horizontal portions of thereversing-cams will maintain the buckets in such position until they arerelieved by the inclined front portion of the longitudinal guide bar orrail, which completesthe movement of the buckets and maintains them inan inverted position until they are acted on by gravity to effect suchresult. Furthermore, it will be clear that the reversal of the bucketsis quickly and accurately performed and that the buckets are not injuredby their engagement with the cams and the guide-rail, as the movement isgradual and as the buckets are free to swing on their pivots and also asthe cams 0f the buckets receive the first shock.

What I claim is- 1. The combination with a conveyor having pivotedbuckets, of a cam arranged in the path of the buckets and adapted topartially reverse the same to swing the said buckets from one side ofthe conveyor-chain to the other, and a guide arranged in rear of the camand adapted to engage the buckets to complete the movement thereof,substantially as described.

2. The combination with a conveyor having pivoted buckets, of a camarranged in the path of the buckets and adapted to be engaged by thesame to partially reverse the buckets, and means for completing the revolution of the buckets, substantially as described.

3. The combination with a conveyer having pivoted buckets, of a devicearranged to be engaged by the buckets, whereby the latter are partiallyreversed, and a guide arranged to be engaged by the buckets to completethe movement thereof, substantially as described.

at. The combination with a conveyor having pivoted buckets, of anapproximately L- shaped cam arranged to be engaged by the buckets,whereby the latter are partially reversed, and a guide arranged tocomplete the movement of the buckets, substantially as described.

5. The combination with a conveyer having pivoted buckets, of a camarranged to be engaged by the buckets, whereby the latter are partiallyreversed, and a guide having an inclined portion arranged to receive thebuckets, and capable of completing the movement of the same,substantially as described.

6. The combination of a conveyer having pivoted buckets, anapproximately L-shaped cam arranged to be engaged with the buckets,whereby the latter are partially reversed, and aguide having an inclinedportion arranged to receive the buckets and capable of completing themovement of the same, substantially as described.

'7. The combination of a conveyer having pivoted buckets, a pair of camslocated at opposite sides of the conveyer and arranged to be engaged bythe buckets, and a guide located at a point between the sides of theconveyer and arranged to be engaged by the buckets, substantially as andfor the purpose described.

8. The combination of a conveyer having pivoted buckets provided atopposite sides arranged to engage and reverse the buckets before thesame leave the horizontal flight, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two Witnesses.

PEETE B. CLARKE.

Witnesses:

JOHN FRENCH, CHARLES ENGEL.

